Dihydroxyaceton (DHA) one of the main ingredients found in sunless solution is derived from sugar beets and sugar cane. These sugars can thicken and harden within lines and spray nozzles creating build-up that can cause undesired spray results, or total system failure. Proper maintenance of your HVLP Gun/Airbrush, including regular cleaning with a purpose-made gun cleaner, ensures equipment remains in its best condition and fully operational.